BE885718A - DEVICE FOR MEASURING THE ATTENUATION OF A TRANSMISSION PATH - Google Patents

DEVICE FOR MEASURING THE ATTENUATION OF A TRANSMISSION PATH

Info

Publication number
BE885718A
BE885718A BE1/9990A BE1009990A BE885718A BE 885718 A BE885718 A BE 885718A BE 1/9990 A BE1/9990 A BE 1/9990A BE 1009990 A BE1009990 A BE 1009990A BE 885718 A BE885718 A BE 885718A
Authority
BE
Belgium
Prior art keywords
attenuation
measuring
transmission path
path
transmission
Prior art date
Application number
BE1/9990A
Other languages
French (fr)
Original Assignee
Cit Alcatel
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cit Alcatel filed Critical Cit Alcatel
Publication of BE885718A publication Critical patent/BE885718A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Noise Elimination (AREA)
  • Radio Relay Systems (AREA)
  • Stereo-Broadcasting Methods (AREA)
BE1/9990A 1979-10-31 1980-10-15 DEVICE FOR MEASURING THE ATTENUATION OF A TRANSMISSION PATH BE885718A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7927010A FR2469054A1 (en) 1979-10-31 1979-10-31 DEVICE FOR MEASURING THE ATTENUATION OF A TRANSMISSION PATH

Publications (1)

Publication Number Publication Date
BE885718A true BE885718A (en) 1981-04-15

Family

ID=9231232

Family Applications (1)

Application Number Title Priority Date Filing Date
BE1/9990A BE885718A (en) 1979-10-31 1980-10-15 DEVICE FOR MEASURING THE ATTENUATION OF A TRANSMISSION PATH

Country Status (11)

Country Link
US (1) US4349707A (en)
JP (1) JPS5675734A (en)
BE (1) BE885718A (en)
CA (1) CA1165917A (en)
DE (1) DE3040241A1 (en)
FR (1) FR2469054A1 (en)
GB (1) GB2063491B (en)
IE (1) IE50947B1 (en)
IT (1) IT1167301B (en)
LU (1) LU82894A1 (en)
NL (1) NL188004B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61237065A (en) * 1985-04-13 1986-10-22 Anritsu Corp 2-channel transmissivity/reflectivity analyzer
US4887289A (en) * 1988-08-29 1989-12-12 New York Telephone Company Remote testing of a trunk leading to an automatic call distributor
WO1999037038A1 (en) 1998-01-15 1999-07-22 Siemens Schweiz Ag Method for setting up echo suppression devices in communication links with automatic machines
DE19825196A1 (en) * 1998-06-05 1999-12-09 Alcatel Sa Method for determining the coupling between two telecommunications (= TC) routes
US6952472B2 (en) * 2001-12-31 2005-10-04 Texas Instruments Incorporated Dynamically estimating echo return loss in a communication link
WO2020171170A1 (en) 2019-02-20 2020-08-27 本田技研工業株式会社 Information processing device, information processing method, service system, program, and storage medium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3637954A (en) * 1969-05-22 1972-01-25 Bell Telephone Labor Inc Method and apparatus for dynamic testing of echo suppressors in telephone trunk systems
US4012603A (en) * 1974-08-27 1977-03-15 Nippon Electric Company, Ltd. Echo suppressor having self-adaptive means
GB1457067A (en) * 1974-12-03 1976-12-01 Standard Telephones Cables Ltd Arrangement for testing telecommunication repeaters
FR2379820A1 (en) * 1977-02-02 1978-09-01 Cit Alcatel Measurement of value of electric signal - includes storing max. during given successive clock periods, and deriving max. of these values

Also Published As

Publication number Publication date
GB2063491A (en) 1981-06-03
US4349707A (en) 1982-09-14
FR2469054A1 (en) 1981-05-08
JPS6360935B2 (en) 1988-11-25
FR2469054B1 (en) 1982-09-03
IT8068655A0 (en) 1980-10-30
LU82894A1 (en) 1981-06-04
IE50947B1 (en) 1986-08-20
CA1165917A (en) 1984-04-17
IE802248L (en) 1981-04-30
JPS5675734A (en) 1981-06-23
GB2063491B (en) 1984-01-25
NL8005941A (en) 1981-06-01
IT1167301B (en) 1987-05-13
DE3040241C2 (en) 1989-12-07
NL188004B (en) 1991-10-01
DE3040241A1 (en) 1981-05-14

Similar Documents

Publication Publication Date Title
GB2034460B (en) Optical measuring device
JPS55140111A (en) Optical fiber measurement device
JPS54158954A (en) Device for measuring fiber optical
FR2483649B1 (en) TORQUE TRANSMISSION DEVICE
FR2573267B1 (en) LISTENING INDEX MEASURING DEVICE
BE881202A (en) SOUND-ACTINIC DEVICE FOR CLEANING AND AEPING
JPS56110028A (en) Optical measuring device
JPS5729009A (en) Device for coupling and measuring optical fiber
JPS5626275A (en) Relative velocity measuring device
FR2445908B1 (en) BAYONET COUPLING DEVICE
JPS5666810A (en) Distance meter for optical device
FR2351386A1 (en) ECCENTRICITY MEASUREMENT DEVICE
RO86519A (en) DEVICE FOR RUMINANTS
JPS567004A (en) Optical device for measuring very small quantity
BE881359A (en) SPLICE DEVICE
FR2544424B1 (en) COUPLING DEVICE
JPS54128361A (en) Optical measuring device
BE885718A (en) DEVICE FOR MEASURING THE ATTENUATION OF A TRANSMISSION PATH
JPS55119037A (en) Device for measuring transfer function of optical fibers
FR2452029B1 (en) CLUTCH DEVICE
FR2436969B1 (en) MEASURING DEVICE FOR INTERRUPTED SURFACES
JPS54128756A (en) Optical measuring device
GB2043387B (en) Optical velocity measurement
BE873551A (en) FIXING DEVICE FOR AN ANGLE TRANSMISSION UNIT
JPS56127296A (en) Optical measuring device

Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: CIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCAT

Effective date: 19941031